A family law mediator is a neutral party specially trained to help couples resolve the issues in their divorce. The mediator facilitates the communication between the parties by making sure each party is given an uninterrupted time to speak, asking a party to restate or explain a point when necessary, and asking questions to make communication clear. The mediator also provides information about the legal system, how issues may be viewed by lawyers or judges, and what alternatives there are for solving issues. When necessary, the mediator will refer the couple to third party experts for services such as appraisals.
Mediation offers a quite different approach to resolving conflicts between the parties. A neutral third party-the mediator- assists the parties in sorting out their affairs and comes to a mutual agreement in a confidential private format. Mediation is a solid option even for those that are having trouble with communication. It is a cost-effective process and it avoids the legal war of going to court.
If one party denies under oath that the marriage is irretrievably broken, the Court may not grant the divorce without finding irretrievable breakdown, after a hearing and consideration of all relevant factors, including but not limited to: 1) the circumstances that gave rise to the commencement of the proceedings; and 2) the prospect of reconciliation.  The Court may not find irretrievable breakdown as long as a reasonable prospect of reconciliation exists. 
To put this amount into perspective, a typical retainer paid to a divorce attorney (by one spouse) is $2,000 (or more); which means, if you both retain an attorney the starting price will likely be at least $4,000. The sticker shock gets worse when you consider that many sources indicate that when each spouse is represented by an attorney the average US divorce costs around $15,000. This same research indicates that divorce mediation in general is between 20-50% cheaper than the traditional adversarial legal process.
Mediation is paid by the hour, and the parties generally split the fees equally, or pay the fee out of a joint account. The fees are paid in full either in advance or on the day of mediation. If the parties don’t finalize an agreement during the mediation, the fees paid may include time for the mediator to prepare a written summary, which is provided to both parties.
It depends on how bad it is. Half of the divorce cases out there involve one or the other party being on anti-depressant medications, so that in and of itself won’t matter much. It really depends on how severe the mental illness is, and how it affects your parenting. If the mental illness negatively affects your parenting, or poses a danger of harm to the children, that will obviously be more relevant. And unless your mental health records are already sufficient for a custody evaluator to assess your mental health, you can expect that a custody evaluation will include a psychological evaluation as well.
In order to maintain the status quo while the divorce is being processed, spouses are allowed to file Motions for Temporary Relief in order to temporarily order child custody, child support, spousal support and any other issues that occur day to day that must be handled while the divorce is being processed. Once the divorce decree is finalized and signed by a judge, the temporary order will expire and the final divorce procedures will go into effect.
NOTE: There are many ways to divide real estate in a divorce. The court forms for marriage dissolution (divorce) only give you 1 option -- one spouse gets 100% of the house, cabin, or other real estate, and the other spouse gets a lien. But, you can change the court forms. An attorney can explain other options, advise you about the law, and draft terms to meet your situation. If your divorce involves real estate, you should get advice from a lawyer on your legal rights and options.