There's no way to tell if what she's offering is fair or completely unreasonable without more information:
- How long were you married?
- Was the home purchased during the marriage or was it inherited or purchased by one of you before the marriage?
- Were the retirement accounts completely accumulated during the marriage? If not, more details (how much was there before the marriage in each account and how much now) are needed
- Are you OK with her having custody? If not, who has been the primary caregiver for the children? How old are the children? Will you be living close enough that 50:50 parenting time would be feasible?
Very general rules are:
- Marital assets and marital debts are typically split 50:50
- The marital portion of retirement accounts should be equally split
- Custody will be determined on the best interests of the child. There is no preference for either parent. USUALLY, that means that the parent who has been the primary caregiver will have primary custody unless the two parents agree to something different (such as 50:50). If the child is older (mid- to late-teens), the child's preference becomes important
Child Custody Laws Massachusetts - Massachusetts Child Custody Laws
- Once custody has been determined, child support can be calculated. The courts need a pretty good reason to deviate significantly from the guidelines:
https://wfb.dor.state.ma.us/DORCommon/Worksheets/CSE/Guidelines.aspx
However, if the two parents agree to something different, the courts will probably approve it (unless money is owed to the state, for example)
- Alimony depends on a lot of factors:
Massachusetts Alimony | divorcenet.com
Alimony is open for the judge to exercise discretion, so it's hard to figure out what's fair. There is a calculator online for MA, but I can't vouch for its accuracy:
Alimony Calculator, Divorce Spousal Support, Divorce Attorneys, Massachusetts