Answer
(Fatwa: 1068/904/B=1432)
If a woman puts anything in her vagina while it is dried, then her fast shall not break due to it. But if it has some liquid or any medicine or it is wet with oil or water, then the fast shall break by putting it. Since tissue papers are dried and nothing is on it hence fast shall not break if it is put inside vagina.
ولو ادخل اصبعه فى استه او المرأة فى فرجها لا يفسد وهو المختار الا اذا كانت مبتلة بالماء او الدهن فحينئذ يفسد لوصول الماء أو الدهن (هنديه 1/24 بحر 2/487)
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband