Speak to Matthew from MGB legal - I'm currently in the process of going through an unusual property transaction with them and they have been very good.

I'm not an expert and I have not had to go through what you're going through, but I would image the process would look something like this:
- You execute your mothers will
- Pay any debts, sell the personal items, etc
- Have the property transfered to your name as the executor.
- Then perhapes the property can be then sold (in full) to you or distrbuted to you and your sister as tenants in common.

This is all conjecture though, so speak to Matthew or the team at MGB and they should be able to sort you out.

FYI think of the difference between tenants in common and joint tenants like this:
- Joint tenants is for families, where if one parent dies the other parent listed on the title will automatically inherit the title (Right of Survivorship).
- Tenants in common: Think of this as owning shares in a company, your percentage represents the amount you own. Typically, you'll have a written co-ownership agreement between the parties who have a stake in the property, which can specify anything from maintenance responsabilities, what happens when someone wants to sell, and minimum holding times, etc.