depression,fear,anxiety, restless to 60 yr old

My mother aged around 62 years,widow suddenly( about 20 days back) goes into a dilemma,confusion state as

1. depression,confusion state suddenly arises after she sold her share in ancestral property.
She thinks that something wrong/fishy in said dealing.

2. different sensless thoughts are arises in her minds which made her confused she also has same type of dreams in night and suddenly she woke up.

3. She says that opponent party had dodged us. Everything we done is wrong done and we have to pay for that.

4. She always had a views that opponent party is very strong, they can do anything against us, we can do nothing .they made a forgery with us. they are now defame us in many ways.We should had not sold the property to them etc etc.

5. sometimes she says she may be wrong but these feeling are coming inside from her and she is not able to stop this.

6. She also complains of 'no taste' feeling for last one month. Whatever she eats she feels no taste. tasteless.

7. she had gone through a Same type of confusion state previously also aroung 15 years back when my father (her husband) expires. Before my fther death same sort of prperty selling discussions are going on with other shareholders but my father never struck a deal during his life time. At that time situation is worst enough. Even we had a see a psychariast also who give her a sort of sleeping pills . After going it for 2 -3 months situation goes normal at that time.

8.She thinks everybody is making conspiracy against her and family. her fgamily is in danger. She even correlates newspaper items 'Someone sells the property by fake documents' etc relates to herself. She never allowed anyone to go outside the house as she feels that they will attack him/her.sometimes her behavious is very offensive and we had to forcefully capture her.

Pl guide me what is the best homeopathic remedy for her. Any other queries is also welcome.