Actually, przypominać means both “to remind” and “to resemble”, so the meaning will depend on the context.
Przypominać in the sense of “to remind” takes the dative case (“komu? czemu?”).
Przypominać in the sense of “to resemble” takes the accusative case (“kogo? co?”).
Here, we have the accusative, so it translates to “I resemble my mother”. If it was in the dative (“Przypominam mojej matce”), it would indeed mean “I remind my mother”.
Hope this helps! Let me know if anything is unclear.