As someone said - first thing to do is get her affairs in order if you haven't already and have DPOA's set up for finance and health if 2 people will be involved or just one for all affairs - definitely consult an attorney and get everything in writing - if your family goes and invests her money and you lose it or there are not checks/balances and someone is essentially embezzling money you're asking for trouble and can cause her all sorts of issues.  

I like being involve in the local community and sharing experiences.

How do I find a mentor?

Emotions shouldn’t be involved. 

Perhaps if you really want to get involved with real estate you might want to consider looking into a REIT rather than physical properties so you can be hands off. 

You should NEVER involve the seller in ANYTHING after the sale, other than seller financing. 

However, if I worked with someone experienced like @Guillaume D. who hypothetically is very involved locally and was finding deals and had the know-how to flip a profit then theoretically would it even matter if it was Montreal or any other place? 

If multifamily is what you want to do I would stay involved and get educated on that.

I'm looking into potentially getting involved in Philadelphia real estate as I try to diversify my investing into different markets.

In fact, if you truly believe the tenant is involved with drugs evicting them should be one of your first priorities.