She's nice, but I don't feel I can confide _____ her.

Confide in: 
English Meaning - To tell something secret or personal to someone whom you trust not to tell anyone else.  
Bangla Meaning - বিশ্বাস করা; নির্ভর করা। 
Example Sentence - I can confide in his honesty.

Complete Sentence - She's nice, but I don't feel I can confide in her. 

এছাড়াও, Confide to: 
English Meaning - To tell something secret or personal to someone you trust not to tell anyone else.
Bangla meaning - বিশ্বাস করে কাউকে গোপন কথা বলা। 
Example - He confided his secrets to a friend.

Source: 
1. Cambridge Dictionary. 
2. Accessible Dictionary by Bangla Academy.