North Haverhill — The twin sister of a Lebanon man accused of setting fire to First Baptist Church pleaded guilty on Tuesday to a misdemeanor obstructing justice charge.

Andrea Kate Gilbert initially faced a felony-level charge in connection with erasing information on her cellphone during the investigation into Anthony Boisvert’s alleged actions.

She will serve a one- to three-year jail sentence, according to court documents. That sentence wraps up the case tied to her brother, as well as two controlled drug charges she faced.

She pleaded guilty to both of those on Tuesday.

Boisvert’s case is still pending.