It may means abortion failure, but is too early to say such. She may restart uterine bleeding
in next few days. It is not an unusual pattern.
BUT, if you live quite far to get emergency medical care then be confirm of it. Your wife may have incomplete abortion
in which she would intermittently bleed and can become severely anemic.
If your wife is a working lady and have to travel for long distance then it may be risky to let her to go. Sometimes jarring of transporation causes severe nonstopable bleeding for women who have taken abortion pills.
Remain in close contact with your GYN/OB doctor and increase her diet with lots of iron supplements